1243600642 has 16 divisors (see below), whose sum is σ = 1894076352. Its totient is φ = 612264240.

The previous prime is 1243600627. The next prime is 1243600651. The reversal of 1243600642 is 2460063421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243600642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115993 + ... + 126259.

It is an arithmetic number, because the mean of its divisors is an integer number (118379772).

Almost surely, 2^1243600642 is an apocalyptic number.

1243600642 is a deficient number, since it is larger than the sum of its proper divisors (650475710).

1243600642 is a wasteful number, since it uses less digits than its factorization.

1243600642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11193.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 1243600642 is about 35264.7223440083. The cubic root of 1243600642 is about 1075.3759325539.

The spelling of 1243600642 in words is "one billion, two hundred forty-three million, six hundred thousand, six hundred forty-two".